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Estimare impedanta tweeter

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Salutam,Am masurat rezistenta si am gasit 3.8 ohm . Am cercetat o serie de piese similare si au un raport intre impedanta si rezistenta dc de 1.3-1.5Teoretic , piesa mea ar trebui sa aibe 6 ohm .Ce parere aveti ? cam cit sa estimez impedanta ?

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De regula impedanta nu este fixa, ci variaza in functie de frecventa. Ceea ce zic ei cand zic impedanta nominala este mai mult o medie din cate am observat, sau o estimare relativa. Unele variaza mai mult, altele mai putin, insa difera in functie de frecventa la care lucreaza.

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Da, era o formulă băbească care dădea impedanţa ca fiind R x 1,25. Acuma, pot să suspectez că fiind chinuit puţin, acel dif de înalte are bobina puţin coaptă şi i s-a modificat rez, el fiind de 4 Ohmi. Sau pur şi simplu, a mai intrat în valoare şi rez cablurilor ohmmetrului.

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